A. In the final Episode 12, of the final Season 8, "Remember the Monsters?".

After Dexter pulled the plug on a brain-dead Debra, at the hospital, he came back with his boat, the Slice of Life.

He docked it just outside the doors of the hospital, during an emergency evacuation due to the impending Hurricane Laura.

Then, for
no apparent reason (other than the writers hoping for a dramatic
moment), Dexter stole Debra's dead body from the hospital, carried it
down to his boat under a sheet, and then dumped her in the ocean -- in the
middle of the hurricane.

He then proceeded to pilot his boat directly into the heart of the raging storm, in what appeared to be attempted suicide.

But, in
what may have been the worst final scene ever, in one of the
worst-received finales ever, we see him later, alive & working at a
lumber camp.

Q. What is it actually in real life?

A. A water taxi dock, but nowhere near a hospital - or Miami.

(Plus a LOT of blue-screen CGI.)

Q. Where can I find it in real life?

A. This is Berth 60 (AKA US Water Taxi).

This little dock hangs off the southwest edge of the large pier/wharf at the south end of Signal Street, just past the historic Warehouse #1, in San Pedro, CA. (See a map.)

It borders the channel between
Signal Street & Miner Street, as well as the Los Angeles Harbor and
(once past the breakwater) the open sea.

In order to make it appear to be next to Miami Central Hospital, they set up a giant blue-screen behind the dock and CGI-inserted the images of the hospital and the various hurricane effects.

In reality, of course, the scene was
shot on a sunny day in California, and the only thing behind them was
the west side of a giant warehouse (and, of course, that blue-screen).

Virtually everything in the scene is faked CGI except for the dock itself, the Slice of Life
and the channel. The hospital is fake in this scene. The Miami
buildings seen across the channel are fake. The distant palm
trees bending in the wind are fake. The storm clouds are fake...

And you see that large gray ship docked on the other side of the channel? That is actually the SS Lane Victory, a WW2 ship that is semi-permanently docked Berth 46, as a tourist attraction.

Along the way, security at the
shoot was so lax that they allowed someone to take photos of the
filming. Those spoiler photos, showing Dexter carrying Debra dead body down to his boat, were spread across the Internet - thus revealing the "top secret" ending to the world months in advance of the finale.

This is the same San Pedro dock where Dexter had filmed many times in the past:

A. Rick tipped me to this one. (Thanks, Rick!)But these leaked spoiler photos of the shoot made the location obvious to anyone familiar with the dock:

If I hadn't known in advance where it was, I imagine it might have been difficult to identify it
from that scene alone,
given the massive use of CGI and blue-screen f/x.

As you can see, they added a low
white & red wall (to look like part of the hospital), a palm tree,
and of course, that giant blue-screen in the background. Below, you can see not only
the Slice of Life, but the Miami Fire-Rescue boat, as well.

In the last spoiler photo, Dex pilots the Slice of Life past one of those towers just offshore.

These photos were all over the Internet, but I have no idea who shot them and originally posted them. (If they are yours, and
you'd like me to add a credit for you, drop me an email.)